I use 62 litre tubs, I'm trying to clone DD"S 42" room..The 27 gallon totes are way bigger than D's buckets, plus I'm running 12 buckets off one 100 gallon res so the system holds less with smaller buckets. Trying to find a heavy duty 60 litre res with a good lid was a shit show. I called tons of recycle supply places before I just got the clear ones from the depot. Although wrapping all of them like presents in polly was tedious It worked and before harvest I'l be able to remove the plastic and see the roots in there. Next run I'm going to find new buckets or paint them black so I can remove the lid. The 10" net pots are about 2 in to the nutes, I was worried about water levels until I put the girls in there and they loved every minute